Will is the bearer of the knife. Now, accompanied by angels, his task is to deliver that powerful, dangerous weapon to Lord Asriel - by the command of his dying father. But how can he go looking for Lord Asriel when Lyra is gone? Only with her help can he fathom the myriad plots and intrigues that beset him. The two great powers of the many worlds are lining up for war, and Will must find Lyra, for together they are on their way to battle, an inevitable journey that will even take them to the world of the dead...

She had asked: What is he? A friend or an enemy? The alethiometer answered: He is a murderer. When she saw the answer, she relaxed at once. Lyra finds herself in a shimmering, haunted otherworld – Cittàgazze, where soul-eating Spectres stalk the streets and wingbeats of distant angels sound against the sky. But she is not without allies: twelve-year-old Will Parry, fleeing for his life after taking another's, has also stumbled into this strange new realm. On a perilous journey from world to world, Lyra and Will uncover a deadly secret: an object of extraordinary and devastating power. And with every step, they move closer to an even greater threat – and the shattering truth of their own destiny.

From the creator of the viral TikTok videos about the sunshine assistant to the evil villain and their unexpected romance comes the third book in the hotly-anticipated fantasy romance series.

Once upon a time, Andrew had cut out his heart and given it to this boy, and he was very sure Thomas had no idea that Andrew would do anything for him. Protect him. Lie for him. Kill for him. High school senior Andrew Perrault finds refuge in the twisted fairytales that he writes for the only person who can ground him to reality—Thomas Rye, the boy with perpetually ink-stained hands and hair like autumn leaves. And with his twin sister, Dove, inexplicably keeping him at a cold distance upon their return to Wickwood Academy, Andrew finds himself leaning on his friend even more. But something strange is going on with Thomas. His abusive parents have mysteriously vanished, and he arrives at school with blood on his sleeve. Thomas won’t say a word about it, and shuts down whenever Andrew tries to ask him questions. Stranger still, Thomas is haunted by something, and he seems to have lost interest in his artwork—whimsically macabre sketches of the monsters from Andrew’s wicked stories. Desperate to figure out what’s wrong with his friend, Andrew follows Thomas into the off-limits forest one night and catches him fighting a nightmarish monster—Thomas’s drawings have come to life and are killing anyone close to him. To make sure no one else dies, the boys battle the monsters every night. But as their obsession with each other grows stronger, so do the monsters, and Andrew begins to fear that the only way to stop the creatures might be to destroy their creator…